人口密度空间化的一种方法

A Method of Spatialization of Population Density

人口密度空间化是地理学中一个重要的研究课题,但是传统方法直接生成的人口密度分布图具有不同区域间突变的缺点。该文中基于面积权重内插法与邻域平均法原理,以MapInfo为软件平台,在缺乏地形图、RS图片等资料的情况下,提出人口密度空间化的一种方法———网格单元面积权重内插法,并以丰县为研究区域进行例证。结果表明:该方法有效缓和了传统方法直接生成的人口密度图中的突变线,制作的人口密度Grid专题地图能够很好地反映人口密度的平均性,生成的人口密度三维可视化地图符合人口密度的空间分布特点。

Spatialization of population density is an important problem in geography. The traditional cartography of population density has a defect in ineontinuity. Based on areal weighting interpolation and neighborhood averages, using Maplnfo as the software platform, the authors put forward a new method named Grid Cells＇Areal Weighting Interpolation （GCAWI） to spatialize the population density,which can be applied on population density mapping when the data such as the topographical map,RS image are short. Then the authors research on the population density spatialization in Feng County and make the three- dimensional population density map. The following conclusions are drawn： GCAWI mitigates the incontinuity effectively; Grid thematic map made by GCAWI can give good expression to equality of population density;Three- dimensional population density map formed by this method is more reasonable.